This paper presents a wireless power transmission system which is able to deliver power to multiple loads by making use of a time‐division multiplexing technique. Similar loads are placed into the slots in a row, and two power transmitters, at the bottom and top, supply them with sufficient amount of power. This system operates in two phases; within one phase, the transmitters are in‐phase, and the resonators placed in odd slots are unloaded and act as power repeaters, and the resonators placed in even slots receive power. In the other phase, the transmitters are out‐of‐phase, and the resonators placed in odd slots receive power while others behave as repeaters. An optimization process is developed in order to find the optimum number of loads so that the required voltage is provided for each load while the headroom voltage of the transmitters does not increase considerably. An optimized seven‐load system is implemented for powering 82‐Ω loads with 2 W. Experimental results show that at least rectified voltage of 4.3 V is provided for each load, which is enough for typical lithium‐ion battery chargers.

中文翻译：

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通过时分复用谐振器的多负载无线电力传输系统

本文提出了一种无线电力传输系统，该系统能够利用时分多路复用技术向多个负载供电。相似的负载连续放置在插槽中，底部和顶部的两个功率发送器为它们提供了足够的功率。该系统分为两个阶段运行：在一个相位内，发射器是同相的，放在奇数个插槽中的谐振器将被卸载并用作功率转发器，而在偶数个插槽中放置的谐振器将接收功率。在另一相中，发射器异相，放在奇数个插槽中的谐振器接收功率，而其他谐振器充当中继器。为了找到最佳负载数，开发了一种优化过程，以便为每个负载提供所需的电压，同时变送器的净空电压不会显着增加。实施了优化的七负载系统，以2 W的功率为82Ω负载供电。实验结果表明，每个负载至少提供4.3 V的整流电压，足以满足典型的锂离子电池充电器的要求。